IS 8008-2: Injection Moulded/Machined High Density Polyethylene (HDPE) Fittings for Potable Water Supplies, Part 2: Specific Requirements for 90° Bends

****************

*■ *Z**K

Disclosure to Promote the Right To Information

Whereas the Parliament of India has set out to provide a practical regime of right to
information for citizens to secure access to information under the control of public authorities,
in order to promote transparency and accountability in the working of every public authority,
and whereas the attached publication of the Bureau of Indian Standards is of particular interest
to the public, particularly disadvantaged communities and those engaged in the pursuit of
education and knowledge, the attached public safety standard is made available to promote the
timely dissemination of this information in an accurate manner to the public.

Jawaharlal Nehru
Step Out From the Old to the New

mrjsssss^^w:

,_A»

****************

BLANK PAGE

<_<ii££

UJ>

PROTECTED BY COPYRIGHT

IS 8008 (Part 2) : 2003

T^ t\ ^ i f^fg^-ftf$lfe

TFT 2 90 fesft fe c& fafcre 3T^aTT§

Indian Standard

INJECTION MOULDED/MACHINED HIGH DENSITY

POLYETHYLENE (HDPE) FITTINGS FOR POTABLE

WATER SUPPLIES — SPECIFICATION

PART 2 SPECIFIC REQUIREMENTS FOR 90° BEND

( First Revision )

ICS 83.140.30;91. 140.60

© BIS 2003

BUREAU OF INDIAN STANDARDS

MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG
NEW DELHI 1 10002

October 2003 Price Group 1

Plastic Piping System Sectional Committee, CED 50

FOREWORD

This Indian Standard (Part 2) (First Revision) was adopted by the Bureau of Indian Standards, after the draft
finalized by the Plastic Piping System Sectional Committee had been approved by the Civil Engineering Division
Council.

This standard covers general requirements for injection moulded/machined HDPE fittings which are used for
connection by welding process to HDPE pipes covered by IS 4984 :1995 'High density polyethylene pipe for

water supply (fourth revision)' .

This standard was first published in 1976. Keeping in view the developments in this field and considering revision
of IS 4984 this standard has been revised.

The requirements of injection moulded/machined HDPE fittings are covered in nine parts. The other parts in this
series are:

(Part 1)
(Part 3)
(Part 4)
(Part 5)
(Part 6)
(Part 7)
(Part 8)
(Part 9)

2003 General requirements for fittings
2003 Specific requirements for 90° tees
2003 Specific requirements for reducers
2003 Specific requirements for ferrule reducers
2003 Specific requirements for pipe ends
2003 Specific requirements for sandwich flanges
2003 Specific requirements for reducing tees
2003 Specific requirements for end caps

All revised parts have been aligned with IS 4984 with respect to grade of material, dimensional requirements,
testing procedures and sampling methodology.

Provisions has been made for rewelding , in case any weld gets rejected. Weld length had been kept constant with
a uniform tolerance.

Drawings have been revised from short neck pipe ends to long neck pipe ends. The range of diameter of fittings,
weld length and clarity of the dimensions in the drawings had been incorporated in each part of the standard,
wherever applicable.

This standard covers general requirements for materials, manufacture, dimensional, etc, for 90° bend.

Fittings from 20 mm to 315 mm are manufactured by the injection moulding methods and machined, wherever
so required and fittings of 355 mm and above shall be manufactured by machining process from thick walled
extruded pipes or compression moulded slabs.

For the purpose of deciding whether a particular requirement of this standard is complied with the final value,
observed or calculated, expressing the result of a test or analysis, shall be rounded off in accordance with
IS 2 : 1960 'Rules for rounding off numerical values (revised)'. The number of significant places retained in the
rounded off value should be the same as that of the specified value in this standard.

IS 8008 (Part 2) : 2003

Indian Standard

INJECTION MOULDED/MACHINED HIGH DENSITY

POLYETHYLENE (HDPE) FITTINGS FOR POTABLE

WATER SUPPLIES — SPECIFICATION

PART 2 SPECIFIC REQUIREMENTS FOR 90° BEND

(First Revision )

1 SCOPE

This standard (Part 2) covers the specific requirements
for materials, manufacture, dimensional and tolerances
and marking for injection moulded and machined
HDPE 90° bends for potable water supplies.

2 REFERENCE

The following standard contains provisions which,
through reference in this text, constitutes provisions of
this standard. At the time of publication the editions
indicated was valid. All standards are subject to revision
and parties to agreements based on this standard is
encouraged to investigate the possibility of applying
the most recent edition of the standard indicated
below:

IS No. Title

8008 (Part 1) : Injection moulded/machined high

2003 density polyethylene ( HDPE )

fittings for potable water supplies

Specification: Part 1 General

requirements for fittings

3 REQUIREMENTS

3.1 General

The general requirements for material, manufacture,
grade, sizes, performance requirements, methods of test
sampling and inspection shall conform to IS 8008
(Part 1). 90° bends from 20 mm to 160 mm shall be
manufactured by the injection moulding methods and
machined wherever so required.

3.2 Manufacture

3.2.1 A typical illustration of injection moulded 90°
bend is shown in Fig. 1 .

3.2.2 Laying Length

The overall laying length and tolerances thereon shall
comply with those given in Table 1 read with Fig 1.

3.2.3 The outside diameters and wall thickness of fitting
at ends shall comply with requirements given in 8 of
IS 8008 (Part 1).

4 MARKING

4.1 Each 90° bend fitting shall be clearly marked at a
prominent place, with the following information:

a) Identification of source of manufacture, and

b) The size of the fittings, grade of material and
appropriate class (working pressure) to which
the pressure rating of the fitting corresponds.

4.2 BIS Certification Marking

Each 90° bend fitting may also be marked with the
Standard Mark.

4.2.1 The use of the Standard Mark is governed by the
provisions of the Bureau of Indian Standards Act, 1 986
and the Rules and Regulations made thereunder.
The details of conditions under which a licence for
the use of the Standard Mark may be granted to the
manufacturers or the producers may be obtained from
the Bureau of Indian Standards.

IS 8008 (Part 2) : 2003

Fig. 1 90° Bend

Table 1 Dimensions for 90° Bends

{Clause 3.2.2)
Ail dimensions in millimetres.

SI No.

(1)

Nominal
Diameter

Diameter for

Manufacturing

Reference

Welding Length

Laying Length

D

D,

K

Z

(2)

(3)

(4)

(5)

20

27

15

35 ±1

25

29

15

40 ±2

32

36.5

15

50 ±2

40

46.5

15

60 ±2

50

57

15

70 ±2

63

70.5

15

80 ±2

75

85

15

90 ±2

90

98

15

110±2

no

122

15

140 ±3

125

135

15

140 ±3

140

150

15

150 ±3

160

170

15

170±3

i)

i'O

iii)

iv)

v)

vi)
vii)
viii)

ix)

x)

xi)
xii)

NOTE — Tolerance on various dimensions are given below:

Dimension Tolerances

Diameter for manufacturing reference, D, ±2 mm

Welding length, K ±3 mm

Bureau of Indian Standards

BIS is a statutory institution established under the Bureau of Indian Standards Act, 1986 to promote harmonious
development of the activities of standardization, marking and quality certification of goods and attending to
connected matters in the country.

Copyright

BIS has the copyright of all its publications. No part of these publications may be reproduced in any form
without the prior permission in writing of BIS. This does not preclude the free use, in the course of implementing
the standard, of necessary details, such as symbols and sizes, type or grade designations. Enquiries relating to
copyright be addressed to the Director (Publication), BIS.

Review of Indian Standards

Amendments are issued to standards as the need arises on the basis of comments. Standards are also reviewed
periodically; a standard along with amendments is reaffirmed when such review indicates that no changes are
needed; if the review indicates that changes are needed, it is taken up for revision. Users of Indian Standards
should ascertain that they are in possession of the latest amendments or edition by referring to the latest issue of
'BIS Catalogue' and 'Standards: Monthly Additions'.

This Indian Standard has been developed from Doc: No.CED 50 (5919).

Amendments Issued Since Publication

Amend No.

Date of Issue

Text Affected

BUREAU OF INDIAN STANDARDS
Headquarters:

Manak Bhavan, 9 Bahadur Shah Zafar Marg, New Delhi 1 10002
Telephones: 2323 0131,2323 3375,2323 9402

Regional Offices:

Central : Manak Bhavan, 9 Bahadur Shah Zafar Marg
NEW DELHI 110002

Eastern : 1/14 C.I.T. Scheme VII M, V.I.P. Road, Kankurgachi
KOLKATA 700054

Northern : SCO 335-336, Sector 34-A, CHANDIGARH 160022
Southern : C.I.T. Campus, IV Cross Road, CHENNAI 600 1 1 3

Western

Branches

Manakalaya, E9 MIDC, Marol, Andheri (East)
MUMBAI 400093

Telegrams: Manaksanstha
(Common to all offices)

Telephone

(-2323 7617
"12323 3841

r 2337 8499, 2337 8561
12337 8626,2337 9120

r 60 3843
1 60 9285

j-2254 1216,2254 1442
12254 2519,2254 2315

j-2832 9295, 2832 7858
1.2832 7891,2832 7892

AHMEDABAD. BANGALORE. BHOPAL. BHUBANESHWAR. COIMBATORE. FARIDABAD.
GHAZIABAD. GUWAHATI. HYDERABAD. JAIPUR. KANPUR. LUCKNOW. NAGPUR.
NALAGARH. PATNA. PUNE. RAJKOT. THIRUVANANTHAPURAM. VISAKHAPATNAM.

Printed at Simco Printing Press, Delhi